38H2NM

critical parts heavy and transport engineering type axles, shafts and other highly loaded parts and components used in low temperature conditions.

Classification

Country Section Category
CIS, Russia, Ukraine Structural steel Alloyed structural steel

Chemical composition

Standard Fe, % Si, % Mn, % Cr, % Ni, % P, % C, % S, % Mo, %
TU 24.11.01.073-86 94.85–96.41 0.17–0.37 0.5–0.8 1.8–2.3 0.6–0.9 < 0.03 0.32–0.42 < 0.03 0.2–0.3

Information on suppliers

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers $$\sigma _{U}$$, $$MPa$$ $$\sigma_{P}$$, $$MPa$$ $$\epsilon_L$$, % $$\psi$$, % $$KCU\cdot 10^{3}$$, $$\frac{J}{m^2}$$ Treatment
Forgings < 300 830 680 12 38 500 Tempering 850-870 ° C, 590-620 ° C and Holidays
Forgings 300–500 740 580 12 35 450 Tempering 850-870 ° C, 590-620 ° C and Holidays
Forgings 500–800 700 530 10 30 400 Tempering 850-870 ° C, 590-620 ° C and Holidays

Brinell hardness number

Rolling Standard Classifiers Value, HBW
Alloy normalization 207–235
Alloy Hardening, average vacation 237–321

Technological Properties

Flake Susceptibility Propensity to temper brittleness
sensitive inclined

Analogues

Germany
G 36 CrNiMo 4

Standards

Standard Description
TU 24.11.01.073-86

Description of chemical elements

Element Units of measurement Description
Fe % Iron
Si % Silicon
Mn % Manganese
Cr % Chrome
Ni % Nickel
P % Phosphorus
C % Carbon
S % Sulfur
Mo % Molybdenum

Description of mechanical properties

Parameter Units of measurement Description
$$\sigma _{U}$$ $$MPa$$ Ultimate tensile strength
$$\sigma_{P}$$ $$MPa$$ Proportionality limit
$$\epsilon_L$$ % Elongation at break (longitudinal)
$$\psi$$ % Reduction in cross section on fracture
$$KCU\cdot 10^{3}$$ $$\frac{J}{m^2}$$ Impact toughness